Resource allocation without limits in B&R Automation Runtime
Priority MEDIUM 44CWE-665Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-770.
Summary
Improper initialization implementation in Portmapper used in B&R Industrial Automation Automation Runtime <G4.93 allows unauthenticated network-based attackers to cause permanent denial-of-service conditions.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00542 45th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| B&R Industrial Automation | B&R Automation Runtime | <G4.93 | — | No fix listed | CNA |
- B&R Automation Runtime VendorB&R Industrial Automation Affected <G4.93 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:br-automation:automation_runtime:*:*:*:*:*:*:*:* | before g4.93 | Vulnerable | B&R Industrial Automation |
- cpe:2.3:a:br-automation:automation_runtime:*:*:*:*:*:*:*:* Versions before g4.93 Vulnerable ·B&R Industrial Automation
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-3242
- 2026-10-03 Alias added: GHSA-j6jr-gfxc-3pp6
References
More B&R Industrial Automation Automation Runtime vulnerabilities
- TI-2024-00297 FTP uses unsecure encryption mechanisms CVSS 3.1CRITICAL 9.8
- TI-2019-13790 B&R Automation Runtime SNMP Authentication and Authorization Weakness CVSS 3.1CRITICAL 9.4
- TI-2021-05253 Denial of service vulnerability on Automation Runtime webserver CVSS 3.1HIGH 8.6
- TI-2024-05377 Diffie-Hellman groups with insufficient strength used in SSL/TLS stack of B&R Automation Runtime CVSS 4.0HIGH 8.3
- TI-2020-09337 Automation Runtime TFTP Service DoS Vulnerability CVSS 3.1HIGH 7.5
- TI-2022-03925 Reflected Cross-Site Scripting Vulnerabilities in Automation Runtime CVSS 3.1MEDIUM 6.1
Sources
- CVE-2023-3242 · CVE Program
- CVE-2023-3242 · NVD
- FIRST EPSS
- GHSA-j6jr-gfxc-3pp6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences